Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
September
Weather in September
Temperature
A mild shift in the average high-temperature occurs in September, reducing from a pleasant 20.8°C (69.4°F) in August to a refreshing 16.4°C (61.5°F). Throughout September, the average low-temperature dips to a frosty 9.3°C (48.7°F).Humidity
In September, the average relative humidity in Kättsta is 80%.Rainfall
In Kättsta, in September, during 13.2 rainfall days, 25mm (0.98") of precipitation is typically accumulated. In Kättsta, during the entire year, the rain falls for 148 days and collects up to 405mm (15.94") of precipitation.Snowfall
In Kättsta, snow does not fall in June through September.Daylight
The average length of the day in September in Kättsta, Sweden, is 12h and 51min.On the first day of September, sunrise is at 05:45 and sunset at 19:50. On the last day of the month, sunrise is at 06:52 and sunset at 18:23 CEST.
Sunshine
In September, the average sunshine is 8.1h.UV index
In September, the average daily maximum UV index in Kättsta is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: An average UV index of 3 in September transforms into this advice:
Undertake precautions - Obligation exists to protect against skin and eye damage. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Kättsta?
What is the average humidity in September in Kättsta?
How many days does it rain in September in Kättsta?
When it does not snow in Kättsta?
Does it snow in Kättsta in September?
How many hours of daylight does Kättsta have in September?
When are sunrise and sunset in September in Kättsta?
How long on average sun shines in September in Kättsta?
What is the UV index intensity in September in Kättsta?
Average temperature in September
Kättsta, Sweden
- Average high temperature in September: 16.4°C
The warmest month (with the highest average high temperature) is July (21.9°C).
The month with the lowest average high temperature is January (-0.9°C).
- Average low temperature in September: 9.3°C
The month with the highest average low temperature is July (12.8°C).
The coldest months (with the lowest average low temperature) are January and February (-4.1°C).
Average pressure in September
Kättsta, Sweden
- Average pressure in September: 1013.2mbar
The month with the highest atmospheric pressure is May (1014.8mbar).
The month with the lowest atmospheric pressure is December (1007.6mbar).
Average wind speed in September
Kättsta, Sweden
- Average wind speed in September: 12.5km/h
The windiest month (with the highest average wind speed) is December (15.9km/h).
The calmest month (with the lowest average wind speed) is August (11.3km/h).
Average humidity in September
Kättsta, Sweden
- Average humidity in September: 80%
The months with the highest relative humidity are January, February and December (89%).
The month with the lowest relative humidity is May (71%).
Average rainfall in September
Kättsta, Sweden
- Average rainfall in September: 25mm
The wettest month (with the highest rainfall) is July (55mm).
The driest month (with the least rainfall) is April (18mm).
Average rainfall days in September
Kättsta, Sweden
- Average rainfall days in September: 13.2 days
The month with the highest number of rainy days is July (18.6 days).
The month with the least rainy days is February (5.5 days).
Average snowfall in September
Kättsta, Sweden
- Average snowfall in September: 0mm
The month with the highest snowfall is February (118mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Kättsta, Sweden
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (14.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Kättsta, Sweden
- Average daylight in September: 12h and 5min
The month with the longest days is June (Average daylight: 18h and 36min).
The month with the shortest days is December (Average daylight: 6h and 6min).
- Average sunshine in September: 8h and 1min
The month with the most sunshine is June (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 2h and 30min).
Average sunshine days in September
Kättsta, Sweden
- Average sunshine days in September: 14.1 days
The month with the most sunshine days is October (14.9 days).
The month with the least sunshine days is July (10.4 days).
Average UV index in September
Kättsta, Sweden
- Average UV index in September: 3
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January and February (UV index 1).
Average cloud cover in September
Kättsta, Sweden
- Average cloud cover in September: 45
The month with the most cloud cover is February (Cloud cover 67).
The month with the least cloud cover is August (Cloud cover 39).
Average visibility in September
Kättsta, Sweden
- Average visibility in September: 9km
The months with the highest visibility are April, May, June, July, August, September and October (9km).
The months with the lowest visibility are January, February, March, November and December (8km).
